IPv4 R&E Routing Table Report 23:05 GMT Wed 18 Jun, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 982734 Prefixes after maximum aggregation (per Origin AS): 379990 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482575 Number of IPv4 prefixes with a valid ROA: 547921 Number of IPv4 prefixes with an invalid ROA: 973 Number of IPv4 prefixes with no ROA: 433840 Total ASes present in the Internet Routing Table: 76766 Prefixes per ASN: 12.80 Origin-only ASes present in the Internet Routing Table: 65802 Origin ASes announcing only one prefix: 26870 Transit ASes present in the Internet Routing Table: 10964 Transit-only ASes present in the Internet Routing Table: 539 Paths with bogon ASNs present in the IPv4 Routing Table: 30 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 73 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1125 Number of instances of unregistered ASNs: 1157 Number of 32-bit ASNs allocated by the RIRs: 46679 Number of 32-bit ASNs visible in the Routing Table: 38326 Prefixes from 32-bit ASNs in the Routing Table: 204328 Number of bogon 32-bit ASNs visible in the Routing Table: 88 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 436 Number of addresses announced to Internet: 3105574656 Equivalent to 185 /8s, 27 /16s and 79 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 321283 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259132 Total APNIC prefixes after maximum aggregation: 77245 APNIC Deaggregation factor: 3.35 Prefixes being announced from the APNIC address blocks: 250582 Unique aggregates announced from the APNIC address blocks: 104376 APNIC Region origin ASes present in the Internet Routing Table: 14569 APNIC Prefixes per ASN: 17.20 APNIC Region origin ASes announcing only one prefix: 4425 APNIC Region transit ASes present in the Internet Routing Table: 1963 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10114 Number of APNIC addresses announced to Internet: 748664832 Equivalent to 44 /8s, 159 /16s and 184 /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, 131072-155961 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: 288816 Total ARIN prefixes after maximum aggregation: 131052 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 290497 Unique aggregates announced from the ARIN address blocks: 139498 ARIN Region origin ASes present in the Internet Routing Table: 19199 ARIN Prefixes per ASN: 15.13 ARIN Region origin ASes announcing only one prefix: 7032 ARIN Region transit ASes present in the Internet Routing Table: 1926 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5227 Number of ARIN addresses announced to Internet: 1349457152 Equivalent to 80 /8s, 111 /16s and 21 /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, 393216-402332 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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 274510 Total RIPE prefixes after maximum aggregation: 134748 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 273232 Unique aggregates announced from the RIPE address blocks: 175817 RIPE Region origin ASes present in the Internet Routing Table: 28910 RIPE Prefixes per ASN: 9.45 RIPE Region origin ASes announcing only one prefix: 12071 RIPE Region transit ASes present in the Internet Routing Table: 3998 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 73 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12493 Number of RIPE addresses announced to Internet: 731005952 Equivalent to 43 /8s, 146 /16s and 68 /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 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 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: 123864 Total LACNIC prefixes after maximum aggregation: 29562 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120386 Unique aggregates announced from the LACNIC address blocks: 48898 LACNIC Region origin ASes present in the Internet Routing Table: 11258 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2650 LACNIC Region transit ASes present in the Internet Routing Table: 2514 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 71 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9207 Number of LACNIC addresses announced to Internet: 171283456 Equivalent to 10 /8s, 53 /16s and 148 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35287 Total AfriNIC prefixes after maximum aggregation: 6633 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 47601 Unique aggregates announced from the AfriNIC address blocks: 13595 AfriNIC Region origin ASes present in the Internet Routing Table: 1922 AfriNIC Prefixes per ASN: 24.77 AfriNIC Region origin ASes announcing only one prefix: 692 AfriNIC Region transit ASes present in the Internet Routing Table: 373 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1285 Number of AfriNIC addresses announced to Internet: 104959232 Equivalent to 6 /8s, 65 /16s and 141 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 11224 8759 105 CHINAMOBILE-CN China Mobile Communication 7545 6190 847 649 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4460 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4431 534 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3278 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2892 856 533 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2193 812 179 CMNET-JIANGSU-AP China Mobile communicati 4755 2181 434 193 TATACOMM-AS TATA Communications formerly Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13650 40932 5223 AMAZON-02, US 11492 4772 316 600 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3635 1320 81 SHAW, CA 174 3588 8744 871 COGENT-174, US 22773 3349 3033 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3227 54767 2478 DNIC-AS-00749, US 396982 3189 3854 427 GOOGLE-CLOUD-PLATFORM, US 16625 3000 1256 2221 AKAMAI-AS, US 36352 2816 230 846 AS-COLOCROSSING, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7681 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 3937 3395 123 AKAMAI-ASN1, NL 9009 3881 353 2089 M247, RO 12389 3106 2304 885 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2401 361 575 TELLCOM-AS, TR 212238 2302 169 1685 CDNEXT, GB 8452 1611 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 8551 1418 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12202 3256 574 UNINET, MX 10620 3501 481 1018 Telmex Colombia S.A., CO 13999 2533 537 353 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1371 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1207 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1201 371 22 Telefonica del Peru S.A.A., PE 22884 1061 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1048 2503 52 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1820 644 27 RAYA-AS, EG 24863 1619 389 16 LINKdotNET-AS, EG 29571 1606 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1061 520 44 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 543 57 57 WANANCHI-, KE 36914 542 82 3 KENET-AS, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13650 40932 5223 AMAZON-02, US 8151 12202 3256 574 UNINET, MX 9808 11224 8759 105 CHINAMOBILE-CN China Mobile Communication 12479 7681 1713 148 UNI2-AS, ES 7545 6190 847 649 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 291 66 ALJAWWALSTC-AS, SA 11492 4772 316 600 CABLEONE, US 18403 4460 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4431 534 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3937 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12202 11628 UNINET, MX 9808 11224 11119 CHINAMOBILE-CN China Mobile Communications Grou 12479 7681 7533 UNI2-AS, ES 7545 6190 5541 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 18403 4460 4434 FPT-AS-AP FPT Telecom Company, VN 11492 4772 4172 CABLEONE, US 9498 4431 4120 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3892 VIETEL-AS-AP Viettel Group, VN 20940 3937 3814 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 394804 UNALLOCATED 8.33.225.0/24 3356 LEVEL3, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 3491 CONSOLE-CONNECT-ASN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.155.208.0/24 Origin: 396169 AS-GHCIL-01, US 23.155.208.0/24 Transit: 35985 ONERINGNET-ATL-1, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /9:14 /10:41 /11:92 /12:300 /13:581 /14:1199 /15:2128 /16:13808 /17:8180 /18:13435 /19:24408 /20:43835 /21:51452 /22:111721 /23:102172 /24:609352 /25:0 /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 6600 7681 UNI2-AS, ES 8151 6419 12202 UNINET, MX 11492 3568 4772 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3431 3635 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2499 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2363 13650 AMAZON-02, US 30036 2253 2594 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2188 3501 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2387 2:1497 3:826 4:10 5:4791 6:162 7:6 8:1570 9:1 11:172 12:1349 13:453 14:2523 15:362 16:286 17:377 18:920 20:545 21:4 22:188 23:7579 24:2812 25:2 27:2765 29:19 31:3295 32:35 33:1 34:83 35:252 36:3122 37:4574 38:9402 39:906 40:174 41:4258 42:1975 43:2643 44:380 45:18630 46:5085 47:319 49:1940 50:1881 51:592 52:1565 54:323 55:1076 56:11 57:267 58:2209 59:1328 60:1171 61:2833 62:2905 63:1792 64:5452 65:2177 66:4618 67:3059 68:1120 69:3835 70:1068 71:622 72:2849 74:2784 75:1503 76:616 77:2720 78:1881 79:1716 80:2205 81:2028 82:3158 83:1419 84:1865 85:3446 86:1084 87:2115 88:1304 89:4422 90:771 91:8406 92:2731 93:2909 94:4025 95:4340 96:1427 97:311 98:982 99:691 100:73 101:1423 102:3877 103:32636 104:5154 105:762 106:1039 107:2662 108:1240 109:4092 110:2237 111:3277 112:2124 113:1816 114:1992 115:2134 116:2082 117:2533 118:2895 119:1918 120:2056 121:1372 122:2772 123:2176 124:1631 125:2910 126:91 128:1576 129:946 130:1291 131:2034 132:772 133:450 134:1547 135:346 136:1350 137:1115 138:2851 139:1590 140:1605 141:1499 142:1899 143:1859 144:1188 145:544 146:2175 147:2111 148:2683 149:2892 150:1266 151:1964 152:2078 153:524 154:7315 155:1753 156:2845 157:1921 158:1332 159:2490 160:3601 161:1848 162:3849 163:2212 164:1857 165:1986 166:1493 167:1974 168:3989 169:789 170:5144 171:1008 172:4452 173:3328 174:918 175:1305 176:3708 177:4719 178:3732 179:2311 180:2752 181:4069 182:3453 183:2205 184:2066 185:21535 186:5185 187:4553 188:4262 189:4302 190:9586 191:1500 192:11268 193:9484 194:7800 195:5538 196:3291 197:3250 198:6058 199:8520 200:8077 201:6389 202:10262 203:10661 204:4539 205:3608 206:4422 207:3455 208:4255 209:5112 210:4568 211:2537 212:4577 213:3739 214:1028 215:48 216:6745 217:3167 218:1354 219:395 220:2084 221:1141 222:724 223:2488 End of report