[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Dec 17 18:02:59 UTC 2021
This is an automated weekly mailing describing the state of the Gobal
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>.
Global IPv4 Routing Table Report 04:00 +10GMT Sat 18 Dec, 2021
BGP Table as seen in Japan.
Report Website: https://thyme.apnic.net
Detailed Analysis: https://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 873825
Prefixes after maximum aggregation (per Origin AS): 331399
Deaggregation factor: 2.64
Unique aggregates announced (without unneeded subnets): 423810
Number of IPv4 prefixes with ROAs (including AS0): 252218
Total ASes present in the Internet Routing Table: 72436
Prefixes per ASN: 12.06
Origin-only ASes present in the Internet Routing Table: 62181
Origin ASes announcing only one prefix: 25683
Transit ASes present in the Internet Routing Table: 10255
Transit-only ASes present in the Internet Routing Table: 354
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 53
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 910
Number of instances of unregistered ASNs: 912
Number of 32-bit ASNs allocated by the RIRs: 38109
Number of 32-bit ASNs visible in the Routing Table: 31625
Prefixes from 32-bit ASNs in the Routing Table: 146124
Number of bogon 32-bit ASNs visible in the Routing Table: 20
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 822
Number of addresses announced to Internet: 3072898560
Equivalent to 183 /8s, 40 /16s and 182 /24s
Percentage of available address space announced: 83.0
Percentage of allocated address space announced: 83.0
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: 291073
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 231564
Total APNIC prefixes after maximum aggregation: 65083
APNIC Deaggregation factor: 3.56
Prefixes being announced from the APNIC address blocks: 226652
Unique aggregates announced from the APNIC address blocks: 93227
APNIC Region origin ASes present in the Internet Routing Table: 12159
APNIC Prefixes per ASN: 18.64
APNIC Region origin ASes announcing only one prefix: 3463
APNIC Region transit ASes present in the Internet Routing Table: 1711
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7347
Number of APNIC addresses announced to Internet: 773210752
Equivalent to 46 /8s, 22 /16s and 66 /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: 256959
Total ARIN prefixes after maximum aggregation: 118517
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 256474
Unique aggregates announced from the ARIN address blocks: 122426
ARIN Region origin ASes present in the Internet Routing Table: 18920
ARIN Prefixes per ASN: 13.56
ARIN Region origin ASes announcing only one prefix: 6851
ARIN Region transit ASes present in the Internet Routing Table: 1949
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: 4251
Number of ARIN addresses announced to Internet: 1300753408
Equivalent to 77 /8s, 135 /16s and 236 /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: 243933
Total RIPE prefixes after maximum aggregation: 114563
RIPE Deaggregation factor: 2.13
Prefixes being announced from the RIPE address blocks: 240345
Unique aggregates announced from the RIPE address blocks: 148218
RIPE Region origin ASes present in the Internet Routing Table: 28174
RIPE Prefixes per ASN: 8.53
RIPE Region origin ASes announcing only one prefix: 12161
RIPE Region transit ASes present in the Internet Routing Table: 3936
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: 10578
Number of RIPE addresses announced to Internet: 713781888
Equivalent to 42 /8s, 139 /16s and 114 /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: 113116
Total LACNIC prefixes after maximum aggregation: 27295
LACNIC Deaggregation factor: 4.14
Prefixes being announced from the LACNIC address blocks: 113897
Unique aggregates announced from the LACNIC address blocks: 47774
LACNIC Region origin ASes present in the Internet Routing Table: 10861
LACNIC Prefixes per ASN: 10.49
LACNIC Region origin ASes announcing only one prefix: 2659
LACNIC Region transit ASes present in the Internet Routing Table: 2170
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 53
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8538
Number of LACNIC addresses announced to Internet: 176279040
Equivalent to 10 /8s, 129 /16s and 206 /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: 27343
Total AfriNIC prefixes after maximum aggregation: 5256
AfriNIC Deaggregation factor: 5.20
Prefixes being announced from the AfriNIC address blocks: 35635
Unique aggregates announced from the AfriNIC address blocks: 11423
AfriNIC Region origin ASes present in the Internet Routing Table: 1581
AfriNIC Prefixes per ASN: 22.54
AfriNIC Region origin ASes announcing only one prefix: 549
AfriNIC Region transit ASes present in the Internet Routing Table: 311
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 911
Number of AfriNIC addresses announced to Internet: 108313088
Equivalent to 6 /8s, 116 /16s and 186 /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 8759 9000 57 CHINAMOBILE-CN China Mobile Communicati
7545 5838 787 681 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4691 4192 74 ERX-CERNET-BKB China Education and Rese
7552 3588 1330 20 VIETEL-AS-AP Viettel Group, VN
7713 3483 1022 55 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3249 1896 54 VNPT-AS-VN VNPT Corp, VN
4766 2480 11119 578 KIXS-AS-KR Korea Telecom, KR
9498 2215 475 236 BBIL-AP BHARTI Airtel Ltd., IN
45090 2136 1198 75 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2123 429 204 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 6043 10081 2593 AMAZON-02, US
11492 4555 302 849 CABLEONE, US
22773 4032 3036 389 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3950 264 30 VIASAT-SP-BACKBONE, US
16625 3660 1887 2548 AKAMAI-AS, US
6327 3391 1319 65 SHAW, CA
749 2890 50784 2146 DNIC-AS-00749, US
30036 2604 374 140 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2524 5043 432 CENTURYLINK-US-LEGACY-QWEST, US
20115 2237 3033 503 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 6844 1733 150 UNI2-AS, ES
20940 3866 3348 210 AKAMAI-ASN1, NL
8551 3495 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
39891 3271 187 23 ALJAWWALSTC-AS, SA
12389 2938 2281 892 ROSTELECOM-AS, RU
9009 2606 274 1390 M247, GB
34984 2204 355 600 TELLCOM-AS, TR
58224 1759 919 576 TCI, IR
13188 1609 100 27 TRIOLAN, UA
61317 1585 213 922 ASDETUK www.heficed.com, GB
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 10557 3450 581 Uninet S.A. de C.V., MX
10620 3256 491 831 Telmex Colombia S.A., CO
11830 2466 369 62 Instituto Costarricense de Electricidad
13999 1636 283 461 Mega Cable, S.A. de C.V., MX
6503 1436 355 522 Axtel, S.A.B. de C.V., MX
28573 1400 2324 258 CLARO S.A., BR
3816 1244 657 147 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
26615 1140 2350 138 TIM SA, BR
6147 1091 370 21 Telefonica del Peru S.A.A., PE
11664 993 190 443 Techtel LMDS Comunicaciones Interactiva
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 1626 393 21 LINKdotNET-AS, EG
24835 1546 499 32 RAYA-AS, EG
36992 1286 1430 268 ETISALAT-MISR, EG
36903 1195 543 114 MT-MPLS, MA
29571 852 68 11 ORANGE-COTE-IVOIRE, CI
36935 685 521 39 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 515 50 32 WANANCHI-, KE
37342 470 32 1 MOVITEL, MZ
23889 428 232 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 10557 3450 581 Uninet S.A. de C.V., MX
9808 8759 9000 57 CHINAMOBILE-CN China Mobile Communicati
12479 6844 1733 150 UNI2-AS, ES
16509 6043 10081 2593 AMAZON-02, US
7545 5838 787 681 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4691 4192 74 ERX-CERNET-BKB China Education and Rese
11492 4555 302 849 CABLEONE, US
22773 4032 3036 389 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3950 264 30 VIASAT-SP-BACKBONE, US
20940 3866 3348 210 AKAMAI-ASN1, NL
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 8759 8702 CHINAMOBILE-CN China Mobile Communications Grou
12479 6844 6694 UNI2-AS, ES
7545 5838 5157 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4691 4617 ERX-CERNET-BKB China Education and Research Net
7155 3950 3920 VIASAT-SP-BACKBONE, US
11492 4555 3706 CABLEONE, US
20940 3866 3656 AKAMAI-ASN1, NL
22773 4032 3643 ASN-CXA-ALL-CCI-22773-RDC, US
7552 3588 3568 VIETEL-AS-AP Viettel Group, VN
8551 3495 3456 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
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
46990 UNALLOCATED 8.5.242.0/23 3356 LEVEL3, 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 8.33.224.0/24 174 COGENT-174, US
54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, 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 https://thyme.apnic.net/current/data-badAS
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
23.252.160.0/24 Origin: 398968 GROUP-IID-01, US
23.252.160.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
23.252.161.0/24 Origin: 398968 GROUP-IID-01, US
23.252.161.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
23.252.162.0/24 Origin: 398968 GROUP-IID-01, US
23.252.162.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
23.252.163.0/24 Origin: 398968 GROUP-IID-01, US
23.252.163.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
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 /10:41 /11:101 /12:304
/13:594 /14:1212 /15:2043 /16:13560 /17:8322 /18:13911
/19:25209 /20:43139 /21:51159 /22:107703 /23:93918 /24:511804
/25:776 /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 5779 6844 UNI2-AS, ES
8151 4382 10557 Uninet S.A. de C.V., MX
11492 3508 4555 CABLEONE, US
6327 3199 3391 SHAW, CA
7155 3040 3950 VIASAT-SP-BACKBONE, US
22773 3006 4032 ASN-CXA-ALL-CCI-22773-RDC, US
8551 2960 3495 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
39891 2807 3271 ALJAWWALSTC-AS, SA
30036 2259 2604 MEDIACOM-ENTERPRISE-BUSINESS, US
11830 1921 2466 Instituto Costarricense de Electricidad y Telec
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1900 2:1012 3:148 4:18 5:3676 6:102
7:5 8:1545 9:1 11:172 12:1701 13:408
14:2305 15:135 16:34 17:374 18:130 20:143
21:4 22:188 23:5350 24:2354 25:2 27:2573
29:19 31:2416 32:106 34:1 35:49 36:1729
37:3907 38:2411 39:695 40:148 41:3921 42:1038
43:2091 44:294 45:15699 46:3731 47:298 49:1629
50:1895 51:106 52:1348 54:288 55:738 56:4
57:56 58:1750 59:1135 60:947 61:2240 62:2410
63:1945 64:5408 65:2334 66:4935 67:2918 68:1183
69:4138 70:1339 71:676 72:3060 74:2614 75:1506
76:711 77:2130 78:1786 79:2765 80:1892 81:1507
82:1418 83:1184 84:1320 85:2830 86:702 87:1898
88:1006 89:3099 90:492 91:7518 92:1886 93:2570
94:3250 95:3597 96:1291 97:344 98:987 99:879
100:75 101:1049 102:1838 103:27753 104:4088 105:442
106:847 107:2411 108:748 109:3978 110:2065 111:3170
112:1940 113:1494 114:1556 115:1947 116:1879 117:2483
118:2303 119:1856 120:1627 121:1010 122:2515 123:2116
124:1603 125:2033 128:1381 129:1117 130:904 131:2073
132:753 133:365 134:1924 135:288 136:846 137:866
138:2443 139:1204 140:855 141:1334 142:1235 143:1403
144:1229 145:332 146:1733 147:1429 148:2212 149:1570
150:863 151:1073 152:1670 153:445 154:3563 155:1360
156:1876 157:1220 158:991 159:2007 160:2368 161:1264
162:3411 163:1185 164:1651 165:1537 166:621 167:1677
168:3643 169:677 170:4299 171:813 172:2913 173:3041
174:1002 175:1115 176:3432 177:4495 178:3008 179:1973
180:2278 181:2668 182:3198 183:1922 184:2416 185:19136
186:4238 187:3496 188:3502 189:3124 190:8779 191:1289
192:11011 193:8487 194:6929 195:4982 196:2918 197:2339
198:5998 199:5974 200:7376 201:5657 202:10461 203:10005
204:4509 205:3392 206:3855 207:3359 208:3985 209:4596
210:4208 211:2413 212:3899 213:3360 214:1154 215:64
216:6394 217:2673 218:1211 219:609 220:1964 221:985
222:845 223:2134
End of report
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