[SANOG] Weekly Global IPv4 Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Sep 24 18:03:26 UTC 2021
This is an automated weekly mailing describing the state of the Internet
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 http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
Global IPv4 Routing Table Report 04:00 +10GMT Sat 25 Sep, 2021
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 864175
Prefixes after maximum aggregation (per Origin AS): 327027
Deaggregation factor: 2.64
Unique aggregates announced (without unneeded subnets): 416114
Total ASes present in the Internet Routing Table: 72001
Prefixes per ASN: 12.00
Origin-only ASes present in the Internet Routing Table: 61879
Origin ASes announcing only one prefix: 25534
Transit ASes present in the Internet Routing Table: 10122
Transit-only ASes present in the Internet Routing Table: 341
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 42
Max AS path prepend of ASN ( 45609) 34
Prefixes from unregistered ASNs in the Routing Table: 907
Number of instances of unregistered ASNs: 912
Number of 32-bit ASNs allocated by the RIRs: 37320
Number of 32-bit ASNs visible in the Routing Table: 31016
Prefixes from 32-bit ASNs in the Routing Table: 144062
Number of bogon 32-bit ASNs visible in the Routing Table: 32
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 463
Number of addresses announced to Internet: 3065905408
Equivalent to 182 /8s, 190 /16s and 1 /24s
Percentage of available address space announced: 82.8
Percentage of allocated address space announced: 82.8
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: 287414
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 231616
Total APNIC prefixes after maximum aggregation: 66252
APNIC Deaggregation factor: 3.50
Prefixes being announced from the APNIC address blocks: 227068
Unique aggregates announced from the APNIC address blocks: 91891
APNIC Region origin ASes present in the Internet Routing Table: 11991
APNIC Prefixes per ASN: 18.94
APNIC Region origin ASes announcing only one prefix: 3424
APNIC Region transit ASes present in the Internet Routing Table: 1678
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 37
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7144
Number of APNIC addresses announced to Internet: 772824960
Equivalent to 46 /8s, 16 /16s and 95 /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, 131072-147769
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: 252530
Total ARIN prefixes after maximum aggregation: 115618
ARIN Deaggregation factor: 2.18
Prefixes being announced from the ARIN address blocks: 252353
Unique aggregates announced from the ARIN address blocks: 120420
ARIN Region origin ASes present in the Internet Routing Table: 18901
ARIN Prefixes per ASN: 13.35
ARIN Region origin ASes announcing only one prefix: 6866
ARIN Region transit ASes present in the Internet Routing Table: 1951
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 28
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4125
Number of ARIN addresses announced to Internet: 1297036288
Equivalent to 77 /8s, 79 /16s and 52 /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: 240870
Total RIPE prefixes after maximum aggregation: 112656
RIPE Deaggregation factor: 2.14
Prefixes being announced from the RIPE address blocks: 237047
Unique aggregates announced from the RIPE address blocks: 145189
RIPE Region origin ASes present in the Internet Routing Table: 28037
RIPE Prefixes per ASN: 8.45
RIPE Region origin ASes announcing only one prefix: 12056
RIPE Region transit ASes present in the Internet Routing Table: 3903
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10416
Number of RIPE addresses announced to Internet: 711546496
Equivalent to 42 /8s, 105 /16s and 86 /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: 111822
Total LACNIC prefixes after maximum aggregation: 26584
LACNIC Deaggregation factor: 4.21
Prefixes being announced from the LACNIC address blocks: 112781
Unique aggregates announced from the LACNIC address blocks: 47158
LACNIC Region origin ASes present in the Internet Routing Table: 10796
LACNIC Prefixes per ASN: 10.45
LACNIC Region origin ASes announcing only one prefix: 2651
LACNIC Region transit ASes present in the Internet Routing Table: 2117
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8458
Number of LACNIC addresses announced to Internet: 176227072
Equivalent to 10 /8s, 129 /16s and 3 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-272796 + 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: 26430
Total AfriNIC prefixes after maximum aggregation: 5210
AfriNIC Deaggregation factor: 5.07
Prefixes being announced from the AfriNIC address blocks: 34463
Unique aggregates announced from the AfriNIC address blocks: 11046
AfriNIC Region origin ASes present in the Internet Routing Table: 1542
AfriNIC Prefixes per ASN: 22.35
AfriNIC Region origin ASes announcing only one prefix: 537
AfriNIC Region transit ASes present in the Internet Routing Table: 306
Average AfriNIC Region AS path length visible: 5.2
Max AfriNIC Region AS path length visible: 42
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 873
Number of AfriNIC addresses announced to Internet: 107936000
Equivalent to 6 /8s, 110 /16s and 249 /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 8031 9000 57 CMNET-GD Guangdong Mobile Communication
7545 5824 786 678 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4701 4192 74 ERX-CERNET-BKB China Education and Rese
7552 3648 1330 20 VIETEL-AS-AP Viettel Group, VN
7713 3512 1022 56 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 2922 1897 56 VNPT-AS-VN VNPT Corp, VN
4766 2495 11119 576 KIXS-AS-KR Korea Telecom, KR
9498 2361 485 236 BBIL-AP BHARTI Airtel Ltd., IN
4755 2147 439 212 TATACOMM-AS TATA Communications formerl
45090 2127 1198 75 CNNIC-TENCENT-NET-AP Shenzhen Tencent C
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 5580 9747 2477 AMAZON-02, US
11492 4722 312 747 CABLEONE, US
22773 4038 3041 316 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3949 264 32 VIASAT-SP-BACKBONE, US
16625 3585 1851 2497 AKAMAI-AS, US
6327 3368 1318 66 SHAW, CA
30036 2591 374 166 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2528 5028 450 CENTURYLINK-US-LEGACY-QWEST, US
20115 2241 3032 504 CHARTER-20115, US
7018 2233 24177 1423 ATT-INTERNET4, US
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
12479 6885 1726 143 UNI2-AS, ES
20940 3835 3348 216 AKAMAI-ASN1, NL
8551 3284 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
39891 3269 187 23 ALJAWWALSTC-AS, SA
12389 2909 2279 895 ROSTELECOM-AS, RU
9009 2530 263 1337 M247, GB
34984 2230 358 602 TELLCOM-AS, TR
61317 1739 260 942 ASDETUK www.heficed.com, GB
58224 1643 892 572 TCI, IR
13188 1610 100 27 TRIOLAN, UA
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 8813 3457 574 Uninet S.A. de C.V., MX
10620 3418 522 686 Telmex Colombia S.A., CO
11830 2495 369 62 Instituto Costarricense de Electricidad
13999 1692 365 462 Mega Cable, S.A. de C.V., MX
6503 1516 359 477 Axtel, S.A.B. de C.V., MX
28573 1465 2306 239 CLARO S.A., BR
3816 1235 646 149 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
26615 1145 2351 136 TIM SA, BR
6147 1088 369 22 Telefonica del Peru S.A.A., PE
11172 957 111 70 Alestra, S. de R.L. de C.V., MX
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 1639 393 21 LINKdotNET-AS, EG
24835 1548 503 32 RAYA-AS, EG
36992 1288 1417 272 ETISALAT-MISR, EG
36903 1183 537 110 MT-MPLS, MA
29571 788 68 11 ORANGE-COTE-IVOIRE, CI
6713 612 1863 34 IAM-AS, MA
36935 595 522 40 Vodafone-, EG
15399 502 49 29 WANANCHI-, KE
37342 470 32 1 MOVITEL, MZ
2018 339 319 73 TENET-1, ZA
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 8813 3457 574 Uninet S.A. de C.V., MX
9808 8031 9000 57 CMNET-GD Guangdong Mobile Communication
12479 6885 1726 143 UNI2-AS, ES
7545 5824 786 678 TPG-INTERNET-AP TPG Telecom Limited, AU
16509 5580 9747 2477 AMAZON-02, US
11492 4722 312 747 CABLEONE, US
4538 4701 4192 74 ERX-CERNET-BKB China Education and Rese
22773 4038 3041 316 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3949 264 32 VIASAT-SP-BACKBONE, US
20940 3835 3348 216 AKAMAI-ASN1, NL
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 8031 7974 CMNET-GD Guangdong Mobile Communication Co.Ltd.
12479 6885 6742 UNI2-AS, ES
7545 5824 5146 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4701 4627 ERX-CERNET-BKB China Education and Research Net
11492 4722 3975 CABLEONE, US
7155 3949 3917 VIASAT-SP-BACKBONE, US
22773 4038 3722 ASN-CXA-ALL-CCI-22773-RDC, US
7552 3648 3628 VIETEL-AS-AP Viettel Group, VN
20940 3835 3619 AKAMAI-ASN1, NL
7713 3512 3456 TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
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 8.33.224.0/24 174 COGENT-174, US
54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US
23061 UNALLOCATED 8.39.119.0/24 3356 LEVEL3, US
1782 UNALLOCATED 8.42.19.0/24 46887 LIGHTOWER, 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 http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 6939 HURRICANE, US
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
23.132.208.0/24 Origin: 7850 CITYLINKFIBER, US
23.132.208.0/24 Transit: 15164 UPNLLC, US
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: 174 COGENT-174, US
41.57.124.0/23 Origin: 37442 UNASSIGNED
41.57.124.0/23 Transit: 37204 TELONE, ZW
Complete listing at http://thyme.rand.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 /10:41 /11:102 /12:304
/13:595 /14:1214 /15:2038 /16:13601 /17:8302 /18:14027
/19:25402 /20:42568 /21:50920 /22:106881 /23:92259 /24:504437
/25:1455 /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 5810 6885 UNI2-AS, ES
11492 3661 4722 CABLEONE, US
8151 3186 8813 Uninet S.A. de C.V., MX
6327 3176 3368 SHAW, CA
7155 3037 3949 VIASAT-SP-BACKBONE, US
22773 2998 4038 ASN-CXA-ALL-CCI-22773-RDC, US
39891 2805 3269 ALJAWWALSTC-AS, SA
8551 2750 3284 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
30036 2244 2591 MEDIACOM-ENTERPRISE-BUSINESS, US
11830 1929 2495 Instituto Costarricense de Electricidad y Telec
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1915 2:1076 3:145 4:20 5:3647 6:83
7:5 8:1540 9:1 11:164 12:1735 13:384
14:2284 15:109 16:24 17:356 18:108 20:126
21:4 22:188 23:5143 24:2450 25:2 27:2534
29:19 31:2336 32:112 34:1 35:47 36:1729
37:3908 38:2249 39:599 40:165 41:3820 42:990
43:2045 44:286 45:15480 46:3736 47:354 48:6
49:1657 50:1821 51:101 52:1285 54:249 55:746
56:4 57:54 58:1733 59:1194 60:931 61:2309
62:2298 63:1967 64:5357 65:2358 66:4987 67:2868
68:1160 69:4123 70:1362 71:677 72:3150 74:2620
75:1490 76:695 77:2027 78:1694 79:2617 80:1875
81:1537 82:1364 83:1155 84:1299 85:2829 86:726
87:1837 88:972 89:3016 90:503 91:7375 92:1847
93:2549 94:3158 95:3485 96:1304 97:345 98:976
99:959 100:76 101:1057 102:1671 103:26978 104:4009
105:437 106:810 107:2339 108:729 109:3873 110:2040
111:3126 112:1943 113:1405 114:1471 115:1918 116:1858
117:2403 118:2309 119:1889 120:1560 121:1076 122:2535
123:2165 124:1595 125:2082 128:1352 129:1346 130:890
131:2018 132:777 133:362 134:1858 135:312 136:787
137:853 138:2391 139:1188 140:758 141:1235 142:1204
143:1367 144:1269 145:324 146:1554 147:1415 148:2164
149:1513 150:824 151:1089 152:1644 153:429 154:3081
155:1342 156:1838 157:1226 158:1002 159:2023 160:2375
161:1257 162:3389 163:1101 164:1549 165:1432 166:592
167:1661 168:3658 169:690 170:4347 171:801 172:2753
173:2940 174:1001 175:1113 176:3294 177:4470 178:3003
179:1905 180:2267 181:2668 182:3265 183:2011 184:2418
185:18894 186:4251 187:3162 188:3332 189:2882 190:8691
191:1343 192:10740 193:8344 194:6808 195:4849 196:2896
197:2123 198:6029 199:5948 200:7374 201:5439 202:10504
203:10031 204:4511 205:3376 206:3778 207:3358 208:4026
209:4758 210:4185 211:2358 212:3771 213:3404 214:1162
215:64 216:6386 217:2605 218:1215 219:666 220:1950
221:979 222:851 223:2075
End of report
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