[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Mar 25 18:02:52 UTC 2022


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 26 Mar, 2022

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              894229
    Prefixes after maximum aggregation (per Origin AS):          336759
    Deaggregation factor:                                          2.66
    Unique aggregates announced (without unneeded subnets):      428489
Total ASes present in the Internet Routing Table:                 72908
    Prefixes per ASN:                                             12.27
Origin-only ASes present in the Internet Routing Table:           62546
Origin ASes announcing only one prefix:                           25701
Transit ASes present in the Internet Routing Table:               10362
Transit-only ASes present in the Internet Routing Table:            381
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      65
    Max AS path prepend of ASN (267602)                              58
Prefixes from unregistered ASNs in the Routing Table:               868
    Number of instances of unregistered ASNs:                       874
Number of 32-bit ASNs allocated by the RIRs:                      38896
Number of 32-bit ASNs visible in the Routing Table:               32344
Prefixes from 32-bit ASNs in the Routing Table:                  151610
Number of bogon 32-bit ASNs visible in the Routing Table:            31
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            479
Number of addresses announced to Internet:                   3068372992
    Equivalent to 182 /8s, 227 /16s and 168 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      303143

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   234292
    Total APNIC prefixes after maximum aggregation:               66359
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          229205
    Unique aggregates announced from the APNIC address blocks:    94106
APNIC Region origin ASes present in the Internet Routing Table:   12501
    APNIC Prefixes per ASN:                                       18.33
APNIC Region origin ASes announcing only one prefix:               3558
APNIC Region transit ASes present in the Internet Routing Table:   1723
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7696
Number of APNIC addresses announced to Internet:              774201472
    Equivalent to 46 /8s, 37 /16s and 96 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    261013
    Total ARIN prefixes after maximum aggregation:               119721
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           260865
    Unique aggregates announced from the ARIN address blocks:    124035
ARIN Region origin ASes present in the Internet Routing Table:    18992
    ARIN Prefixes per ASN:                                        13.74
ARIN Region origin ASes announcing only one prefix:                6895
ARIN Region transit ASes present in the Internet Routing Table:    1953
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4406
Number of ARIN addresses announced to Internet:              1295812864
    Equivalent to 77 /8s, 60 /16s and 137 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    256375
    Total RIPE prefixes after maximum aggregation:               117145
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           253772
    Unique aggregates announced from the RIPE address blocks:    150114
RIPE Region origin ASes present in the Internet Routing Table:    28102
    RIPE Prefixes per ASN:                                         9.03
RIPE Region origin ASes announcing only one prefix:               12050
RIPE Region transit ASes present in the Internet Routing Table:    3993
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10659
Number of RIPE addresses announced to Internet:               714103424
    Equivalent to 42 /8s, 144 /16s and 90 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  114098
    Total LACNIC prefixes after maximum aggregation:              27461
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         114067
    Unique aggregates announced from the LACNIC address blocks:   48178
LACNIC Region origin ASes present in the Internet Routing Table:  10936
    LACNIC Prefixes per ASN:                                      10.43
LACNIC Region origin ASes announcing only one prefix:              2635
LACNIC Region transit ASes present in the Internet Routing Table:  2204
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        65
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8632
Number of LACNIC addresses announced to Internet:             176288768
    Equivalent to 10 /8s, 129 /16s and 244 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  27583
    Total AfriNIC prefixes after maximum aggregation:              5417
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         35841
    Unique aggregates announced from the AfriNIC address blocks:  11646
AfriNIC Region origin ASes present in the Internet Routing Table:  1618
    AfriNIC Prefixes per ASN:                                     22.15
AfriNIC Region origin ASes announcing only one prefix:              563
AfriNIC Region transit ASes present in the Internet Routing Table:  325
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  951
Number of AfriNIC addresses announced to Internet:            107692288
    Equivalent to 6 /8s, 107 /16s and 65 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        9136       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5903        789     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4707       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3600       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3487       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3434       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2498      11121     602  KIXS-AS-KR Korea Telecom, KR
  9498        2389        491     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2146       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2108        429     197  TATACOMM-AS TATA Communications formerl

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        6299      10252    2665  AMAZON-02, US
 11492        4452        295     717  CABLEONE, US
 22773        3945       3061     366  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3895        263      26  VIASAT-SP-BACKBONE, US
 16625        3648       1879    2562  AKAMAI-AS, US
  6327        3418       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2607        373     177  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2520       4962     428  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2256       3042     495  CHARTER-20115, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6807       1730     149  UNI2-AS, ES
  9121        6721       1692      17  TTNET, TR
  8551        4003        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3916       3360     200  AKAMAI-ASN1, NL
 39891        3819        220      34  ALJAWWALSTC-AS, SA
 12389        2960       2274     909  ROSTELECOM-AS, RU
  6849        2783        355      21  UKRTELNET, UA
  9009        2468        248    1287  M247, GB
 34984        2199        355     622  TELLCOM-AS, TR
 47331        2089        329    1599  TTNET, TR

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10477       3408     551  Uninet S.A. de C.V., MX
 10620        3473        519     715  Telmex Colombia S.A., CO
 11830        2431        369      62  Instituto Costarricense de Electricidad
 13999        1725        292     478  Mega Cable, S.A. de C.V., MX
  6503        1446        354     524  Axtel, S.A.B. de C.V., MX
 28573        1397       2332     253  CLARO S.A., BR
  3816        1254        666     146  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1090        369      21  Telefonica del Peru S.A.A., PE
 11664        1006        192     450  Techtel LMDS Comunicaciones Interactiva
 11172         956        133      63  Alestra, S. de R.L. de C.V., MX

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1584        393      21  LINKdotNET-AS, EG
 24835        1518        515      32  RAYA-AS, EG
 36992        1300       1518     261  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         911         64      63  ORANGE-COTE-IVOIRE, CI
  6713         612       1863      34  IAM-AS, MA
 36935         560        520      43  Vodafone-, EG
 15399         514         51      34  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
 23889         422        232      16  MauritiusTelecom, MU

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10477       3408     551  Uninet S.A. de C.V., MX
  9808        9136       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6807       1730     149  UNI2-AS, ES
  9121        6721       1692      17  TTNET, TR
 16509        6299      10252    2665  AMAZON-02, US
  7545        5903        789     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4707       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4452        295     717  CABLEONE, US
  8551        4003        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 22773        3945       3061     366  ASN-CXA-ALL-CCI-22773-RDC, US

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9136         9092  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6721         6704  TTNET, TR
 12479        6807         6658  UNI2-AS, ES
  7545        5903         5207  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4707         4633  ERX-CERNET-BKB China Education and Research Net
  8551        4003         3964  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3895         3869  VIASAT-SP-BACKBONE, US
 39891        3819         3785  ALJAWWALSTC-AS, SA
 11492        4452         3735  CABLEONE, US
 20940        3916         3716  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
   1333342  UNALLOCATED  2.58.228.0/22           133334  DCNBSI-AS-AP DCTV Cable Netw
    398083  UNALLOCATED  5.104.72.0/24           399587  UT, US
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW
41.57.124.0/24       Origin:     37442  UNASSIGNED
41.57.124.0/24      Transit:     37204  TELONE, ZW

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:40      /11:102     /12:307     
/13:588     /14:1205    /15:2057    /16:13563   /17:8323    /18:13882   
/19:25167   /20:43299   /21:52208   /22:108372  /23:95539   /24:528740  
/25:808     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
  9121        5871        6721  TTNET, TR
 12479        5788        6807  UNI2-AS, ES
  8151        4133       10477  Uninet S.A. de C.V., MX
  8551        3477        4003  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3364        4452  CABLEONE, US
  6327        3230        3418  SHAW, CA
 39891        3131        3819  ALJAWWALSTC-AS, SA
  7155        2988        3895  VIASAT-SP-BACKBONE, US
 22773        2936        3945  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2636        2783  UKRTELNET, UA

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1842      2:1052      3:154       4:7         5:3781      6:112    
   7:5         8:1564      9:1        11:172      12:1710     13:301    
  14:2389     15:182      16:42       17:380      18:147      20:194    
  21:4        22:188      23:5550     24:2357     25:4        27:2600   
  29:19       31:2415     32:96       34:1        35:66       36:1752   
  37:4388     38:2685     39:710      40:150      41:3934     42:987    
  43:2100     44:291      45:16171    46:4062     47:348      49:1669   
  50:1926     51:107      52:1407     53:1        54:362      55:808    
  56:8        57:59       58:1816     59:1197     60:956      61:2269   
  62:2475     63:1942     64:5523     65:2302     66:4847     67:2974   
  68:1177     69:4165     70:1344     71:659      72:3072     74:2669   
  75:1389     76:700      77:2123     78:3895     79:3102     80:1976   
  81:1701     82:1476     83:1213     84:1350     85:3653     86:716    
  87:1973     88:2691     89:3247     90:519      91:7621     92:1975   
  93:2603     94:3474     95:4748     96:1311     97:348      98:993    
  99:866     100:75      101:1034    102:1993    103:28862   104:4310   
 105:464     106:853     107:2503    108:804     109:4146    110:2073   
 111:3285    112:2007    113:1523    114:1492    115:1962    116:1902   
 117:2517    118:2277    119:1866    120:1677    121:1063    122:2575   
 123:2120    124:1614    125:2113    128:1200    129:1212    130:916    
 131:2078    132:761     133:374     134:1931    135:290     136:878    
 137:866     138:2419    139:1494    140:1116    141:1359    142:1282   
 143:1482    144:1233    145:344     146:1774    147:1464    148:2216   
 149:1692    150:854     151:1079    152:1837    153:458     154:3542   
 155:1416    156:1886    157:1235    158:1030    159:2078    160:2433   
 161:1323    162:3461    163:1234    164:1645    165:1616    166:689    
 167:1719    168:3756    169:698     170:4440    171:817     172:3068   
 173:3072    174:1019    175:1126    176:3507    177:4561    178:3426   
 179:1983    180:2280    181:2934    182:3248    183:1941    184:2384   
 185:19461   186:4339    187:3650    188:3861    189:3118    190:8853   
 191:1294    192:11054   193:8560    194:6962    195:4976    196:2977   
 197:2391    198:6019    199:6029    200:7482    201:5652    202:10506  
 203:10013   204:4550    205:3386    206:3752    207:3391    208:4041   
 209:4660    210:4257    211:2433    212:3998    213:3381    214:1160   
 215:67      216:6444    217:2646    218:1259    219:597     220:1955   
 221:980     222:848     223:2142   

End of report


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