[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 1 18:02:55 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 02 Apr, 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:                              894261
    Prefixes after maximum aggregation (per Origin AS):          336800
    Deaggregation factor:                                          2.66
    Unique aggregates announced (without unneeded subnets):      429313
Total ASes present in the Internet Routing Table:                 72943
    Prefixes per ASN:                                             12.26
Origin-only ASes present in the Internet Routing Table:           62600
Origin ASes announcing only one prefix:                           25737
Transit ASes present in the Internet Routing Table:               10343
Transit-only ASes present in the Internet Routing Table:            374
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      64
    Max AS path prepend of ASN (267602)                              58
Prefixes from unregistered ASNs in the Routing Table:               857
    Number of instances of unregistered ASNs:                       862
Number of 32-bit ASNs allocated by the RIRs:                      38970
Number of 32-bit ASNs visible in the Routing Table:               32390
Prefixes from 32-bit ASNs in the Routing Table:                  151943
Number of bogon 32-bit ASNs visible in the Routing Table:            25
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            458
Number of addresses announced to Internet:                   3067757056
    Equivalent to 182 /8s, 218 /16s and 66 /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:      303502

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

Prefixes being announced by APNIC Region ASes:                   234083
    Total APNIC prefixes after maximum aggregation:               66355
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          229063
    Unique aggregates announced from the APNIC address blocks:    94311
APNIC Region origin ASes present in the Internet Routing Table:   12508
    APNIC Prefixes per ASN:                                       18.31
APNIC Region origin ASes announcing only one prefix:               3558
APNIC Region transit ASes present in the Internet Routing Table:   1718
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:   7709
Number of APNIC addresses announced to Internet:              773920384
    Equivalent to 46 /8s, 33 /16s and 22 /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:                    260493
    Total ARIN prefixes after maximum aggregation:               119704
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           260322
    Unique aggregates announced from the ARIN address blocks:    124053
ARIN Region origin ASes present in the Internet Routing Table:    19004
    ARIN Prefixes per ASN:                                        13.70
ARIN Region origin ASes announcing only one prefix:                6901
ARIN Region transit ASes present in the Internet Routing Table:    1950
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:    4423
Number of ARIN addresses announced to Internet:              1295374080
    Equivalent to 77 /8s, 53 /16s and 215 /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:                    256769
    Total RIPE prefixes after maximum aggregation:               117224
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           254143
    Unique aggregates announced from the RIPE address blocks:    150645
RIPE Region origin ASes present in the Internet Routing Table:    28112
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12060
RIPE Region transit ASes present in the Internet Routing Table:    3974
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:   10661
Number of RIPE addresses announced to Internet:               714114944
    Equivalent to 42 /8s, 144 /16s and 135 /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:                  114180
    Total LACNIC prefixes after maximum aggregation:              27436
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114160
    Unique aggregates announced from the LACNIC address blocks:   48228
LACNIC Region origin ASes present in the Internet Routing Table:  10948
    LACNIC Prefixes per ASN:                                      10.43
LACNIC Region origin ASes announcing only one prefix:              2654
LACNIC Region transit ASes present in the Internet Routing Table:  2205
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        64
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8643
Number of LACNIC addresses announced to Internet:             176362240
    Equivalent to 10 /8s, 131 /16s and 19 /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:                  27879
    Total AfriNIC prefixes after maximum aggregation:              5433
    AfriNIC Deaggregation factor:                                  5.13
Prefixes being announced from the AfriNIC address blocks:         36115
    Unique aggregates announced from the AfriNIC address blocks:  11686
AfriNIC Region origin ASes present in the Internet Routing Table:  1622
    AfriNIC Prefixes per ASN:                                     22.27
AfriNIC Region origin ASes announcing only one prefix:              564
AfriNIC Region transit ASes present in the Internet Routing Table:  327
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:  954
Number of AfriNIC addresses announced to Internet:            107723520
    Equivalent to 6 /8s, 107 /16s and 187 /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        9146       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5906        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4713       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3607       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3499       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3435       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2497      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2391        491     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2147       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2114        429     196  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        6152      10256    2661  AMAZON-02, US
 11492        4456        296     714  CABLEONE, US
 22773        3938       3060     365  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3900        264      31  VIASAT-SP-BACKBONE, US
 16625        3635       1870    2562  AKAMAI-AS, US
  6327        3419       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2610        373     153  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2522       4962     425  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        6801       1730     149  UNI2-AS, ES
  9121        6714       1692      17  TTNET, TR
  8551        4001        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3928       3360     200  AKAMAI-ASN1, NL
 39891        3819        220      34  ALJAWWALSTC-AS, SA
 12389        2959       2274     909  ROSTELECOM-AS, RU
  6849        2859        355      21  UKRTELNET, UA
  9009        2472        248    1292  M247, GB
 34984        2214        356     620  TELLCOM-AS, TR
 47331        2084        328    1596  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       10511       3404     556  Uninet S.A. de C.V., MX
 10620        3475        519     714  Telmex Colombia S.A., CO
 11830        2430        369      62  Instituto Costarricense de Electricidad
 13999        1729        293     471  Mega Cable, S.A. de C.V., MX
  6503        1447        355     524  Axtel, S.A.B. de C.V., MX
 28573        1393       2332     253  CLARO S.A., BR
  3816        1256        667     148  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1084        369      21  Telefonica del Peru S.A.A., PE
 11664        1006        192     447  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        1583        393      21  LINKdotNET-AS, EG
 24835        1548        523      33  RAYA-AS, EG
 36992        1303       1518     261  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         894         64      59  ORANGE-COTE-IVOIRE, CI
 36935         771        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         517         51      34  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
 23889         424        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       10511       3404     556  Uninet S.A. de C.V., MX
  9808        9146       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6801       1730     149  UNI2-AS, ES
  9121        6714       1692      17  TTNET, TR
 16509        6152      10256    2661  AMAZON-02, US
  7545        5906        789     699  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4713       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4456        296     714  CABLEONE, US
  8551        4001        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 22773        3938       3060     365  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        9146         9102  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6714         6697  TTNET, TR
 12479        6801         6652  UNI2-AS, ES
  7545        5906         5207  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4713         4638  ERX-CERNET-BKB China Education and Research Net
  8551        4001         3962  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3900         3869  VIASAT-SP-BACKBONE, US
 39891        3819         3785  ALJAWWALSTC-AS, SA
 11492        4456         3742  CABLEONE, US
 20940        3928         3728  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
    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
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US
     32306  UNALLOCATED  8.46.80.0/24             33652  CMCS, 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     /14:1204    /15:2055    /16:13552   /17:8313    /18:13886   
/19:25175   /20:43277   /21:52232   /22:108492  /23:95605   /24:528595  
/25:809     /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        5869        6714  TTNET, TR
 12479        5780        6801  UNI2-AS, ES
  8151        4165       10511  Uninet S.A. de C.V., MX
  8551        3475        4001  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3364        4456  CABLEONE, US
  6327        3231        3419  SHAW, CA
 39891        3131        3819  ALJAWWALSTC-AS, SA
  7155        2990        3900  VIASAT-SP-BACKBONE, US
 22773        2936        3938  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2712        2859  UKRTELNET, UA

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

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

   1:1843      2:1036      3:154       4:7         5:3792      6:112    
   7:5         8:1563      9:1        11:172      12:1709     13:288    
  14:2386     15:189      16:44       17:380      18:148      20:194    
  21:4        22:188      23:5581     24:2291     25:6        27:2594   
  29:19       31:2440     32:96       34:1        35:69       36:1756   
  37:4416     38:2667     39:708      40:151      41:3930     42:998    
  43:2157     44:288      45:16106    46:4139     47:349      49:1682   
  50:1923     51:107      52:1409     53:1        54:362      55:710    
  56:8        57:58       58:1805     59:1196     60:955      61:2268   
  62:2487     63:1945     64:5512     65:2301     66:4859     67:2973   
  68:1180     69:4159     70:1343     71:658      72:3064     74:2661   
  75:1389     76:588      77:2149     78:3895     79:3104     80:1984   
  81:1738     82:1479     83:1197     84:1333     85:3645     86:714    
  87:1970     88:2697     89:3280     90:519      91:7620     92:1986   
  93:2607     94:3489     95:4752     96:1312     97:347      98:991    
  99:770     100:74      101:1029    102:2017    103:28748   104:4294   
 105:466     106:842     107:2510    108:824     109:4227    110:2068   
 111:3296    112:2011    113:1523    114:1480    115:1956    116:1904   
 117:2518    118:2268    119:1865    120:1679    121:1060    122:2553   
 123:2123    124:1594    125:2112    128:1196    129:1212    130:913    
 131:2073    132:763     133:373     134:1931    135:290     136:876    
 137:874     138:2427    139:1496    140:852     141:1389    142:1283   
 143:1483    144:1235    145:342     146:1772    147:1473    148:2214   
 149:1706    150:849     151:1077    152:1837    153:459     154:3513   
 155:1434    156:1899    157:1236    158:1029    159:2082    160:2440   
 161:1326    162:3464    163:1236    164:1643    165:1603    166:693    
 167:1717    168:3756    169:701     170:4435    171:823     172:3103   
 173:3075    174:1019    175:1129    176:3509    177:4569    178:3449   
 179:2000    180:2276    181:2950    182:3249    183:1942    184:2385   
 185:19483   186:4370    187:3667    188:3878    189:3139    190:8861   
 191:1309    192:11012   193:8588    194:6945    195:4970    196:2980   
 197:2407    198:6024    199:6016    200:7485    201:5663    202:10498  
 203:10016   204:4551    205:3380    206:3766    207:3400    208:4041   
 209:4662    210:4256    211:2453    212:4009    213:3407    214:1155   
 215:67      216:6448    217:2659    218:1261    219:573     220:1951   
 221:980     222:846     223:2140   

End of report


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