[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Sep 2 18:03:07 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 03 Sep, 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:                              907883
    Prefixes after maximum aggregation (per Origin AS):          342498
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      439018
Total ASes present in the Internet Routing Table:                 73617
    Prefixes per ASN:                                             12.33
Origin-only ASes present in the Internet Routing Table:           63186
Origin ASes announcing only one prefix:                           26027
Transit ASes present in the Internet Routing Table:               10431
Transit-only ASes present in the Internet Routing Table:            401
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               967
    Number of instances of unregistered ASNs:                       967
Number of 32-bit ASNs allocated by the RIRs:                      40121
Number of 32-bit ASNs visible in the Routing Table:               33280
Prefixes from 32-bit ASNs in the Routing Table:                  159468
Number of bogon 32-bit ASNs visible in the Routing Table:             7
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            512
Number of addresses announced to Internet:                   3068907136
    Equivalent to 182 /8s, 235 /16s and 206 /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:               99.6
Total number of prefixes smaller than registry allocations:      308077

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

Prefixes being announced by APNIC Region ASes:                   237156
    Total APNIC prefixes after maximum aggregation:               67523
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          232153
    Unique aggregates announced from the APNIC address blocks:    96567
APNIC Region origin ASes present in the Internet Routing Table:   12920
    APNIC Prefixes per ASN:                                       17.97
APNIC Region origin ASes announcing only one prefix:               3738
APNIC Region transit ASes present in the Internet Routing Table:   1764
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         34
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8163
Number of APNIC addresses announced to Internet:              773393152
    Equivalent to 46 /8s, 25 /16s and 11 /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:                    264819
    Total ARIN prefixes after maximum aggregation:               121041
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           265221
    Unique aggregates announced from the ARIN address blocks:    127920
ARIN Region origin ASes present in the Internet Routing Table:    19066
    ARIN Prefixes per ASN:                                        13.91
ARIN Region origin ASes announcing only one prefix:                6922
ARIN Region transit ASes present in the Internet Routing Table:    1923
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4604
Number of ARIN addresses announced to Internet:              1293708544
    Equivalent to 77 /8s, 28 /16s and 109 /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:                    260443
    Total RIPE prefixes after maximum aggregation:               119678
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           257626
    Unique aggregates announced from the RIPE address blocks:    153274
RIPE Region origin ASes present in the Internet Routing Table:    28181
    RIPE Prefixes per ASN:                                         9.14
RIPE Region origin ASes announcing only one prefix:               12074
RIPE Region transit ASes present in the Internet Routing Table:    4000
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10781
Number of RIPE addresses announced to Internet:               717216128
    Equivalent to 42 /8s, 191 /16s and 217 /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:                  116141
    Total LACNIC prefixes after maximum aggregation:              27953
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         115807
    Unique aggregates announced from the LACNIC address blocks:   48928
LACNIC Region origin ASes present in the Internet Routing Table:  10980
    LACNIC Prefixes per ASN:                                      10.55
LACNIC Region origin ASes announcing only one prefix:              2699
LACNIC Region transit ASes present in the Internet Routing Table:  2232
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8718
Number of LACNIC addresses announced to Internet:             176407040
    Equivalent to 10 /8s, 131 /16s and 194 /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:                  28357
    Total AfriNIC prefixes after maximum aggregation:              5563
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         36564
    Unique aggregates announced from the AfriNIC address blocks:  11890
AfriNIC Region origin ASes present in the Internet Routing Table:  1684
    AfriNIC Prefixes per ASN:                                     21.71
AfriNIC Region origin ASes announcing only one prefix:              594
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1014
Number of AfriNIC addresses announced to Internet:            107898880
    Equivalent to 6 /8s, 110 /16s and 104 /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        9087       8883      47  CHINAMOBILE-CN China Mobile Communicati
  7545        5928        789     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4709       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3583       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3511       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3377       1877      67  VNPT-AS-VN VNPT Corp, VN
  4766        2478      11124     601  KIXS-AS-KR Korea Telecom, KR
  9498        2427        499     238  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2190        851     407  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2180       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        6962      10424    2780  AMAZON-02, US
 11492        4540        301     578  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3812       3066     354  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3491       1803    2517  AKAMAI-AS, US
  6327        3455       1319      63  SHAW, CA
   749        3034      50727    2292  DNIC-AS-00749, US
 30036        2612        370     236  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2531       3387     365  GOOGLE-CLOUD-PLATFORM, US
   209        2362       4936     404  CENTURYLINK-US-LEGACY-QWEST, 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        6891       1730     144  UNI2-AS, ES
  9121        6635       1692      17  TTNET, TR
 20940        4058       3348     219  AKAMAI-ASN1, NL
  8551        3993        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3874        226      44  ALJAWWALSTC-AS, SA
 12389        2941       2290     910  ROSTELECOM-AS, RU
  6849        2759        355      21  UKRTELNET, UA
  9009        2605        252    1349  M247, GB
 34984        2264        359     632  TELLCOM-AS, TR
 47331        2082        325    1577  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       10694       3393     556  Uninet S.A. de C.V., MX
 10620        3495        515     789  Telmex Colombia S.A., CO
 11830        2340        369      64  Instituto Costarricense de Electricidad
 13999        1979        321     507  Mega Cable, S.A. de C.V., MX
 28573        1360       2327     267  Claro NXT Telecomunicacoes Ltda, BR
  6503        1288        338     520  Axtel, S.A.B. de C.V., MX
  3816        1274        699     154  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1135        369      21  Telefonica del Peru S.A.A., PE
 11664        1049        179     460  Techtel LMDS Comunicaciones Interactiva
 26615         980       2466      43  TIM SA, BR

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        1602        393      21  LINKdotNET-AS, EG
 24835        1520        521      31  RAYA-AS, EG
 36992        1325       1519     268  ETISALAT-MISR, EG
 36903        1268        550      99  MT-MPLS, MA
 29571        1000         68      38  ORANGE-COTE-IVOIRE, CI
 36935         810        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         521         52      39  WANANCHI-, KE
 37342         481         32       1  MOVITEL, MZ
 23889         401        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       10694       3393     556  Uninet S.A. de C.V., MX
  9808        9087       8883      47  CHINAMOBILE-CN China Mobile Communicati
 16509        6962      10424    2780  AMAZON-02, US
 12479        6891       1730     144  UNI2-AS, ES
  9121        6635       1692      17  TTNET, TR
  7545        5928        789     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4709       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4540        301     578  CABLEONE, US
 20940        4058       3348     219  AKAMAI-ASN1, NL
  8551        3993        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne

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

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

   ASN  No of nets  Net Savings  Description
  9808        9087         9040  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6891         6747  UNI2-AS, ES
  9121        6635         6618  TTNET, TR
  7545        5928         5232  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4709         4634  ERX-CERNET-BKB China Education and Research Net
 16509        6962         4182  AMAZON-02, US
 11492        4540         3962  CABLEONE, US
  8551        3993         3955  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3898         3866  VIASAT-SP-BACKBONE, US
 20940        4058         3839  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
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             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
23.128.80.0/24       Origin:    397372  UNASSIGNED
23.128.80.0/24      Transit:       577  BACOM, CA
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

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      /10:39      /11:101     /12:298     
/13:592     /14:1209    /15:2063    /16:13518   /17:8350    /18:13960   
/19:25148   /20:44465   /21:52276   /22:109213  /23:97160   /24:538665  
/25:797     /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
 12479        5878        6891  UNI2-AS, ES
  9121        5792        6635  TTNET, TR
  8151        4470       10694  Uninet S.A. de C.V., MX
 11492        3457        4540  CABLEONE, US
  8551        3452        3993  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3265        3455  SHAW, CA
 39891        3185        3874  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2830        3812  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2616        2759  UKRTELNET, UA

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

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

   1:1954      2:1032      3:161       4:5         5:3861      6:115    
   7:6         8:1587      9:1        11:173      12:1640     13:341    
  14:2371     15:251      16:46       17:360      18:218      20:244    
  21:4        22:188      23:5918     24:2442     25:6        27:2653   
  29:19       31:2413     32:93       34:7        35:89       36:1849   
  37:4483     38:3482     39:722      40:154      41:3937     42:1142   
  43:2225     44:285      45:16107    46:4185     47:329      49:1702   
  50:1951     51:112      52:1463     54:386      55:839      56:8      
  57:61       58:1790     59:1160     60:983      61:2295     62:2548   
  63:1918     64:5587     65:2308     66:4886     67:2967     68:1208   
  69:4154     70:1304     71:684      72:3025     74:2644     75:1406   
  76:584      77:2268     78:3970     79:3129     80:2047     81:1802   
  82:1491     83:1216     84:1383     85:3687     86:732      87:1906   
  88:2802     89:3436     90:551      91:7648     92:2051     93:2542   
  94:3540     95:4802     96:1298     97:352      98:1028     99:720    
 100:77      101:1065    102:2309    103:29809   104:4570    105:470    
 106:889     107:2556    108:875     109:4324    110:2010    111:3331   
 112:2052    113:1542    114:1490    115:2013    116:1945    117:2478   
 118:2322    119:1820    120:1795    121:1079    122:2524    123:2087   
 124:1578    125:2144    128:1237    129:1031    130:1007    131:2050   
 132:819     133:377     134:1936    135:298     136:858     137:874    
 138:2518    139:1513    140:951     141:1455    142:1347    143:1400   
 144:1192    145:342     146:1855    147:1508    148:2221    149:1810   
 150:863     151:1080    152:1870    153:466     154:3756    155:1453   
 156:1743    157:1278    158:1036    159:2192    160:2529    161:1336   
 162:3505    163:1396    164:1627    165:1650    166:787     167:1758   
 168:3827    169:869     170:4533    171:846     172:3340    173:3128   
 174:1023    175:1143    176:3622    177:4726    178:3574    179:2146   
 180:2339    181:3258    182:3234    183:1938    184:2365    185:19649  
 186:4573    187:3817    188:3984    189:3402    190:8981    191:1465   
 192:10988   193:8665    194:7113    195:5060    196:2968    197:2467   
 198:6002    199:6041    200:7634    201:5750    202:10514   203:10046  
 204:4512    205:3429    206:3783    207:3436    208:4051    209:4714   
 210:4370    211:2402    212:4070    213:3467    214:1118    215:66     
 216:6392    217:2630    218:1290    219:572     220:2014    221:947    
 222:832     223:1990   

End of report


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