[REN-BGP-stats] Weekly Global IPv4 R&E Routing Table Report
REN Routing Table Report
cscora at bgp.nsrc.org
Sat Dec 7 22:00:46 UTC 2024
This is an automated weekly mailing describing the state of the IPv4
Research & Education Routing Table received by NSRC's collector
from Internet2's network.
Daily listings are sent to ren-bgp-stats-all at lists.nsrc.org.
For historical data, please see https://bgp.nsrc.org.
If you have any comments please contact Philip Smith <philip at nsrc.org>.
IPv4 R&E Routing Table Report 22:00 GMT Sat 07 Dec, 2024
IPv4 BGP Table (R&E) as seen at Internet2.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/
Analysis Summary
----------------
BGP routing table entries examined: 24896
Prefixes after maximum aggregation (per Origin AS): 13605
Deaggregation factor: 1.83
Unique aggregates announced (without unneeded subnets): 15878
Number of IPv4 prefixes with a valid ROA: 12581
Number of IPv4 prefixes with an invalid ROA: 20
Number of IPv4 prefixes with no ROA: 12295
Total ASes present in the Internet Routing Table: 2794
Prefixes per ASN: 8.91
Origin-only ASes present in the Internet Routing Table: 2413
Origin ASes announcing only one prefix: 1074
Transit ASes present in the Internet Routing Table: 381
Transit-only ASes present in the Internet Routing Table: 66
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.4
Max AS path length visible: 27
Max AS path prepend of ASN (138136) 20
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45967
Number of 32-bit ASNs visible in the Routing Table: 673
Prefixes from 32-bit ASNs in the Routing Table: 1871
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 7
Number of addresses announced to Internet: 242277712
Equivalent to 14 /8s, 112 /16s and 221 /24s
Percentage of available address space announced: 6.5
Percentage of allocated address space announced: 6.5
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: 3456
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4639
Total APNIC prefixes after maximum aggregation: 2255
APNIC Deaggregation factor: 2.06
Prefixes being announced from the APNIC address blocks: 4747
Unique aggregates announced from the APNIC address blocks: 2723
APNIC Region origin ASes present in the Internet Routing Table: 560
APNIC Prefixes per ASN: 8.48
APNIC Region origin ASes announcing only one prefix: 237
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 208
Number of APNIC addresses announced to Internet: 45573696
Equivalent to 2 /8s, 183 /16s and 102 /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, 131072-153913
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: 14037
Total ARIN prefixes after maximum aggregation: 7737
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 13759
Unique aggregates announced from the ARIN address blocks: 9041
ARIN Region origin ASes present in the Internet Routing Table: 1291
ARIN Prefixes per ASN: 10.66
ARIN Region origin ASes announcing only one prefix: 450
ARIN Region transit ASes present in the Internet Routing Table: 159
Average ARIN Region AS path length visible: 3.1
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 216
Number of ARIN addresses announced to Internet: 131329360
Equivalent to 7 /8s, 211 /16s and 237 /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: 3624
Total RIPE prefixes after maximum aggregation: 2897
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3779
Unique aggregates announced from the RIPE address blocks: 3162
RIPE Region origin ASes present in the Internet Routing Table: 669
RIPE Prefixes per ASN: 5.65
RIPE Region origin ASes announcing only one prefix: 300
RIPE Region transit ASes present in the Internet Routing Table: 109
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 156
Number of RIPE addresses announced to Internet: 58661760
Equivalent to 3 /8s, 127 /16s and 27 /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: 1447
Total LACNIC prefixes after maximum aggregation: 543
LACNIC Deaggregation factor: 2.66
Prefixes being announced from the LACNIC address blocks: 1455
Unique aggregates announced from the LACNIC address blocks: 726
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 9.33
LACNIC Region origin ASes announcing only one prefix: 56
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4232256
Equivalent to 0 /8s, 64 /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: 1148
Total AfriNIC prefixes after maximum aggregation: 172
AfriNIC Deaggregation factor: 6.67
Prefixes being announced from the AfriNIC address blocks: 1149
Unique aggregates announced from the AfriNIC address blocks: 219
AfriNIC Region origin ASes present in the Internet Routing Table: 51
AfriNIC Prefixes per ASN: 22.53
AfriNIC Region origin ASes announcing only one prefix: 31
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 2.9
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2477056
Equivalent to 0 /8s, 37 /16s and 204 /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
2907 596 2200 462 SINET-AS Research Organization of Informa
7497 446 180 24 CSTNET-AS-AP Computer Network Information
1237 193 74 145 KREONET-AS-KR KISTI, KR
58647 181 18 2 KAGAWAU-AS Kagawa University, JP
7575 171 313 114 AARNET-AS-AP Australian Academic and Rese
4538 139 4192 71 ERX-CERNET-BKB China Education and Resear
55824 131 18 18 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 60 4 35 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 4030 4874 1947 AMAZON-02, US
14618 1020 4484 768 AMAZON-AES, US
2152 511 507 99 CENIC-2152, US
2920 224 44 49 LACOE, US
668 205 648 174 DNIC-AS-00668, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 141 18 5 NETBLK-RCOEK, US
81 134 517 33 NCREN, US
1 128 2 49 LVLT-1, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
786 186 1767 183 JANET Jisc Services Limited, GB
8895 132 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
8987 81 226 58 AMAZON EXPANSION, IE
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR
28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 53 5 19 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 541 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
327700 16 16 1 MoRENet, MZ
37074 15 8 2 UG-AS, GH
37661 12 8 4 NRaE1-AS, NG
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 4030 4874 1947 AMAZON-02, US
14618 1020 4484 768 AMAZON-AES, US
2907 596 2200 462 SINET-AS Research Organization of Informa
36914 541 82 3 KENET-AS, KE
2152 511 507 99 CENIC-2152, US
7497 446 180 24 CSTNET-AS-AP Computer Network Information
2018 380 319 71 TENET-1, ZA
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 224 44 49 LACOE, US
1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 541 538 KENET-AS, KE
7497 446 422 CSTNET-AS-AP Computer Network Information Cente
2152 511 412 CENIC-2152, US
2018 380 309 TENET-1, ZA
14618 1020 252 AMAZON-AES, US
5786 198 197 UPRENET, PR
58647 181 179 KAGAWAU-AS Kagawa University, JP
2920 224 175 LACOE, US
1916 218 175 Rede Nacional de Ensino e Pesquisa, BR
18558 141 136 NETBLK-RCOEK, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
103.165.160.0/24 Origin: 16509 AMAZON-02, US
103.165.160.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
198.135.168.0/24 Origin: 14618 AMAZON-AES, US
198.135.168.0/24 Transit: 16509 AMAZON-02, US
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
Complete listing at https://bgp.nsrc.org/REN/Internet2/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 /8:0 /9:1 /10:1 /11:3 /12:18
/13:28 /14:58 /15:173 /16:2072 /17:491 /18:506
/19:647 /20:1005 /21:1122 /22:1753 /23:1930 /24:14814
/25:42 /26:62 /27:97 /28:11 /29:59 /30:0
/31:0 /32:3
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
16509 672 4030 AMAZON-02, US
36914 517 541 KENET-AS, KE
14618 325 1020 AMAZON-AES, US
8895 127 132 ISU Internet Services Unit ISU, SA
2152 61 511 CENIC-2152, US
1916 60 218 Rede Nacional de Ensino e Pesquisa, BR
1 42 128 LVLT-1, US
23024 37 95 OCDE, US
32440 37 63 LONI, US
3267 34 77 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 3:166 4:2 5:20 6:4 8:2
12:2 13:56 14:92 15:105 16:129 18:153
23:49 24:3 31:3 34:2 35:41 37:8
38:11 40:5 41:225 42:11 44:6 45:74
46:10 47:1 49:10 50:12 52:830 54:178
58:1 59:19 60:5 61:3 62:7 63:38
64:142 65:25 66:97 67:69 68:27 69:56
70:22 71:16 72:19 74:81 75:1 76:49
77:12 78:3 79:10 80:12 81:25 82:7
83:7 84:9 85:49 86:5 87:2 88:1
89:19 91:53 92:4 93:45 94:2 95:2
96:7 97:1 98:14 99:68 101:1 102:14
103:334 104:132 107:8 108:37 109:7 111:21
113:1 114:24 115:1 116:14 117:66 118:33
119:23 121:28 122:11 123:8 124:42 125:5
128:55 129:41 130:163 131:74 132:65 133:154
134:112 135:2 136:224 137:115 138:66 139:20
140:50 141:13 142:77 143:34 144:42 145:4
146:138 147:75 148:206 149:19 150:43 151:36
152:149 153:14 154:40 155:104 156:132 157:41
158:41 159:169 160:35 161:40 162:74 163:76
164:23 165:75 166:5 167:37 168:174 169:15
170:183 171:1 172:19 173:38 174:2 175:16
176:4 177:6 178:1 179:11 180:16 181:1
182:11 184:9 185:84 186:3 187:21 188:15
189:2 190:18 191:13 192:1598 193:291 194:127
195:72 196:147 197:330 198:607 199:349 200:287
201:37 202:653 203:450 204:433 205:206 206:244
207:344 208:133 209:197 210:219 211:3 212:171
213:19 214:8 216:213 217:11 218:23 219:6
220:16 222:2 223:15
End of report
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